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Jon Risch, Steve Eddy or someone...! Questions/Opinions regarding DC to AC inverter power supply

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Tanker

(A)

1. In general, is it good to use an inverter for power source to power the audio equipment? I plan to use 12VDC to 115VAC inverter (with Pure sinewave output) as a power source for my CD player and tube preamp. I can either use a car battery or a separate 12 VDC power supply in conjunction with the inverter. As you can see if I use a battery then the CD players and preamp will be completely isolated from the house power. This approach I think it's best in this case. On the other hand if I use a separate 12VDC power supply then I think this work similar to PS Audio power unit. Is this assumption correct? Is PS audio use AC to DC then back to AC, right?
Please give your thoughts. Thanks

Follow Ups:

Re: Why on earth would you do this?? - Gepetto 14:37:45 04/15/02 (1)
I am baffled why you want to add this level of complexity when it matters so little.
The local switching noise and RFI generated by most inverters will well surpass any junk coming thru the AC line...
Crank it up...
- To have cleanest power as possible. Also to duplicate the PS Audio power conditioner which.. - Tanker 07:55:30 04/19/02 (0)
  is too expensive for my taste.
Re: Or someone...! Questions/Opinions regarding DC to AC inverter power supply - justaguy 22:13:47 04/14/02 (0)
Why not just get a 1:1 isolation transformer?
Re: Jon Risch, Steve Eddy or someone...! Questions/Opinions regarding DC to AC inverter power suppl - Jon Risch 20:06:50 04/14/02 (1)
If this inverter actually does put out a true sine wave, without harmonics and waveform stepping, etc., then it might do some good.
However, most of these that I have seen, have limited output capacity, and this may limit dynamic current draw. Yes, it does seem that such concerns might not be relevant for line level units, but a CD player has a motor that is under servo control in it, as well as a laser focus and tracking assembly that draws significant transient current.
These things can put some amount of dynamic demands on the AC power, and so such an inverter may not react well under these conditions. The effective output impedance off this conveter may be quite high with poor dynamic regulation.
Of course, the thing to do, is to try it, and see. Be aware of any potential problems driving the equipment, and keep the volume down at first, incase there are any anomolies or problems.

Jon Risch
- Re: Jon Risch, Steve Eddy or someone...! Questions/Opinions regarding DC to AC inverter power suppl - zanash 01:51:08 04/15/02 (0)
  Yes I agree ......limited output from these.

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